How to Analyze Suspicious Downloaded Files Without Running Them

Have a file that looks suspicious — but not enough to delete?

Don’t open it.
Here’s how to analyze it safely and deeply without execution.


✅ 1. Check file extension and name

  • Real PDFs end in .pdf, not .pdf.exe

  • Beware of double extensions

  • Right-click → Properties → See actual file type

✅ Hackers disguise EXEs as documents or images.


✅ 2. View file metadata

Use tools like:

  • ExifTool (for media/documents)

  • PEStudio (for Windows executables)

✅ See hidden details:

  • Creator info

  • Compile date

  • Suspicious scripts


✅ 3. Upload to Hybrid Analysis

Go to https://www.hybrid-analysis.com

  • Upload your file

  • It’s executed in a virtual environment

  • You get behavior reports (network calls, file creation, etc.)

✅ Great for advanced detection.


✅ 4. Use VirusTotal’s advanced info

  • VirusTotal shows:

    • PE headers

    • Behavior

    • Relationships with other malware

✅ Don’t just look at “0/70” — scroll down for full analysis.


✅ 5. Never run it directly

If unsure:

  • Keep it in a zip

  • Don’t open it in email preview

  • Don’t run it in real Windows without analysis

✅ Curiosity is dangerous — analysis is smart.


Key points to remember

  • Extensions can be misleading — always double-check

  • Use tools like PEStudio or ExifTool to examine metadata

  • Hybrid Analysis = deep behavioral insight

  • VirusTotal offers detailed threat info beyond detection counts

  • If you’re unsure — don’t run it

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